1. Centers for Medicare and Medicaid Services. NHE Fact Sheet. 2014. http://www.cms.gov/Research-Statistics-Data-and-Systems/Statistics-Trends-and-Reports/NationalHealthExpendData/NHE-Fact-Sheet.html . Accessed 6 Mar 2015.
2. Ward BW, Schiller JS, Goodman RA. Multiple chronic conditions among US adults: a 2012 update. Prev Chronic Dis. 2014;11:E62.
3. Centers for Disease Control and Prevention National Center for Health Statistics. NCHS obesity data. 2014. http://www.cdc.gov/nchs/data/factsheets/factsheet_obesity.htm . Accessed 6 Mar 2015.
4. Thorpe KE, Florence CS, Howard DH, Joski P. The rising prevalence of treated disease: effects on private health insurance spending. Health Aff. (Millwood). 2005;Suppl Web Exclusives:W5-317–W315-325.
5. Thorpe KE, Florence CS, Howard DH, Joski P. The impact of obesity on rising medical spending. Health Aff (Millwood). 2004;Suppl Web Exclusives:W4-480–486.